[petsc-dev] MatAXPY with DIFFERENT_NONZERO_PATTERN

[Alexander Grayver]

Sorry, I don't quite get. Is this something I can avoid by doing 
preallocation properly or petsc issue that will be fixed?

On 20.04.2012 14:23, Jed Brown wrote:
> On Fri, Apr 20, 2012 at 05:18, Matthew Knepley <knepley at gmail.com 
> <mailto:knepley at gmail.com>> wrote:
>
>     Did someone intend to fix this, and then
>     stop? MatAXPY_BasicWithPreallocation() is the same as MatAXPY_Basic().
>
>
> Look how it's called. I don't know what's going on here.
>
>     ierr = 
> MatAXPYGetPreallocation_SeqAIJ(yy->A,xx->A,nnz_d);CHKERRQ(ierr);
>     ierr = 
> MatAXPYGetPreallocation_SeqAIJ(yy->B,xx->B,nnz_o);CHKERRQ(ierr);
>     ierr = MatMPIAIJSetPreallocation(B,0,nnz_d,0,nnz_o);CHKERRQ(ierr);
>     ierr = MatAXPY_BasicWithPreallocation(B,Y,a,X,str);CHKERRQ(ierr);
>


-- 
Regards,
Alexander

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-dev/attachments/20120422/5f02f1d7/attachment.html>